OSTEOSYNTHESIS SCREW COMPRISING ANGULAR INDEXING IN RELATION TO THE SCREWDRIVER AND HAVING UNIVERSAL COMPATIBILITY

The present invention relates to a clamping screw (6) for osteosynthesis, comprising at least one screw thread (7, 10) along a main axis (X) and, at its end referred to as the apex end (11), having a socket (12) which, about said main axis (A), has evenly angularly distributed shapes designed to accept complementing shapes of a screwdriver (19) engaged in said socket (12), notable in that the socket (12) of the screw (6) comprises at least three regular shapes (13) of which the vertices are inscribed inside a circle referred to as circumscribed circle (30) and at least two adjacent vertices of the socket (21) are connected to form a convex lobe referred to as indexing lobe (16) of which the radius of curvature is equal to the radius of the circumscribed circle (30). La presente invención se refiere a un tornillo de apriete (6) para osteosíntesis que comprende por lo menos un fileteado (7, 10) según un eje principal (X) y, en su extremo denominado apical (11), una huella (12) que presenta alrededor de dicho eje principal (X) unas formas regulares distribuidas angularmente, adaptadas para recibir unas formas complementarias de un destornillador (19) que se acopla en dicha huella (12), en el que la huella (12) del tornillo (6) comprende por lo menos tres formas regulares (13) cuyos vértices están inscritos en un círculo denominado círculo circunscrito (30) y por lo menos dos vértices adyacentes de la huella (12) están unidos para formar un lóbulo convexo denominado de indexación (16) cuyo radio de curvatura es igual al radio del círculo circunscrito (30).